Accurate microwave control and real-time diagnostics of neutral-atom qubits

Worawarong Rakreungdet, Jae Hoon Lee, Kim Fook Lee, Brian E. Mischuck, Enrique Montano, Poul S Jessen

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We demonstrate accurate single-qubit control in an ensemble of atomic qubits trapped in an optical lattice. The qubits are driven with microwave radiation, and their dynamics tracked by optical probe polarimetry. Real-time diagnostics is crucial to minimize systematic errors and optimize the performance of single-qubit gates, leading to fidelities of 0.99 for single-qubit π rotations. We show that increased robustness to large, deliberately introduced errors can be achieved through the use of composite rotations. However, during normal operation the combination of very small intrinsic errors and additional decoherence during the longer pulse sequences precludes any significant performance gain in our current experiment.

Original languageEnglish (US)
Article number022316
JournalPhysical Review A
Volume79
Issue number2
DOIs
StatePublished - Feb 13 2009

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neutral atoms
microwaves
polarimetry
systematic errors
composite materials
probes
pulses

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Accurate microwave control and real-time diagnostics of neutral-atom qubits. / Rakreungdet, Worawarong; Lee, Jae Hoon; Lee, Kim Fook; Mischuck, Brian E.; Montano, Enrique; Jessen, Poul S.

In: Physical Review A, Vol. 79, No. 2, 022316, 13.02.2009.

Research output: Contribution to journalArticle

Rakreungdet, Worawarong ; Lee, Jae Hoon ; Lee, Kim Fook ; Mischuck, Brian E. ; Montano, Enrique ; Jessen, Poul S. / Accurate microwave control and real-time diagnostics of neutral-atom qubits. In: Physical Review A. 2009 ; Vol. 79, No. 2.
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